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Open Access Nano Express

Fluorescence energy transfer in quantum dot/azo dye complexes in polymer track membranes

Yulia A Gromova, Anna O Orlova*, Vladimir G Maslov, Anatoly V Fedorov and Alexander V Baranov

Author Affiliations

Saint Petersburg National Research University of Information Technologies, Mechanics and Optics, Kronverkskiy pr, Saint Petersburg 197101, Russia

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Nanoscale Research Letters 2013, 8:452  doi:10.1186/1556-276X-8-452

Published: 31 October 2013

Abstract

Fluorescence resonance energy transfer in complexes of semiconductor CdSe/ZnS quantum dots with molecules of heterocyclic azo dyes, 1-(2-pyridylazo)-2-naphthol and 4-(2-pyridylazo) resorcinol, formed at high quantum dot concentration in the polymer pore track membranes were studied by steady-state and transient PL spectroscopy. The effect of interaction between the complexes and free quantum dots on the efficiency of the fluorescence energy transfer and quantum dot luminescence quenching was found and discussed.

Keywords:
Quantum dots; Azo dyes; FRET; Track membrane